Brennan, Martin Stanislaus, 1845-1927 · New York : The Catholic publication society co. · leaf 82
distance of their illuminated summitsfrom the enlightened part of the disc with a micrometer,and obtaining at the same time, by observation, thepositions of the sun and Moon. The height of the lunarmountains is known as accurately as that of the chiefmountains on the earth. The Mo ox. 73 Mountains… … Fig 9.—Photograph of a Lunar Phase, by Professor Charroppin, S.J., St.Louis University. feet, and Huyghens, 18,060 feet in height; and the craterwalls of Newton, 23,853 feet deep. The best time to see the really broken characterof the lunar surface is to observe it at the first or last 74…
Astronomy
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